record powerset_carrier (A: objs1 SET) : Type1 ≝ { mem_operator: A ⇒_1 CPROP }.
interpretation "powerset low" 'powerset A = (powerset_carrier A).
notation "hvbox(a break ∈. b)" non associative with precedence 45 for @{ 'mem_low $a $b }.
-interpretation "memlow" 'mem_low a S = (mem_operator ? S a).
+interpretation "memlow" 'mem_low a S = (fun11 ?? (mem_operator ? S) a).
definition subseteq_operator: ∀A: objs1 SET. Ω^A → Ω^A → CProp0 ≝
λA:objs1 SET.λU,V.∀a:A. a ∈. U → a ∈. V.
[ apply (. (#‡(e w)^-1)); apply x;
| apply (. (#‡e w)); apply x]]
qed.
+
+notation < "hovbox(mstyle scriptlevel 1 scriptsizemultiplier 1.7 (⋃) \below (\emsp) term 90 p)"
+non associative with precedence 50 for @{ 'bigcup $p }.
+notation < "hovbox(mstyle scriptlevel 1 scriptsizemultiplier 1.7 (⋃) \below (ident i ∈ I) break term 90 p)"
+non associative with precedence 50 for @{ 'bigcup_mk (λ${ident i}:$I.$p) }.
+notation > "hovbox(⋃ f)" non associative with precedence 60 for @{ 'bigcup $f }.
+
+notation < "hovbox(mstyle scriptlevel 1 scriptsizemultiplier 1.7 (⋂) \below (\emsp) term 90 p)"
+non associative with precedence 50 for @{ 'bigcap $p }.
+notation < "hovbox(mstyle scriptlevel 1 scriptsizemultiplier 1.7 (⋂) \below (ident i ∈ I) break term 90 p)"
+non associative with precedence 50 for @{ 'bigcap_mk (λ${ident i}:$I.$p) }.
+notation > "hovbox(⋂ f)" non associative with precedence 60 for @{ 'bigcap $f }.
+
+interpretation "bigcup" 'bigcup f = (fun12 ?? (big_union ??) f).
+interpretation "bigcap" 'bigcap f = (fun12 ?? (big_intersects ??) f).
+interpretation "bigcup mk" 'bigcup_mk f = (fun12 ?? (big_union ??) (mk_unary_morphism2 ?? f ?)).
+interpretation "bigcap mk" 'bigcap_mk f = (fun12 ?? (big_intersects ??) (mk_unary_morphism2 ?? f ?)).